ARA were asked to radically reconfigure this unremarkable Edwardian house in Oxford. The design includes a swimming pool under the garden, and a glass pavilion looking back at the house. The inside of the house is hollowed out, with a spectacular staircase lit by a gilded rooflight, bringing warm light all the way down into the new basement. The rear of the house is extended into the garden, with two new angled brick gables floating over a canopied glass-fronted family space. The project also includes a gym, cinema, music room and home office.